| A | B |
|---|
| Most amphibians exist as | aquatic larvae that breathe with gills and as terestrial adults that breathe using lungs and skin |
| Adaptations that helped early amphibians live on land included all of the following EXCEPT | dry, scaly skin |
| The mimicry practiced by some species of nontoxic amphibians would be most effective against predators that hunt by sensing the | color of their prey |
| In a frog, the cavity through which digestive wastes, urine, and eggs or sperm leave the body is the | cloaca |
| The eggs of amphibians can dry out easily because they | do not have shells |
| A frog's tympanic membranes would be most useful for | listening to the mating calls of other frogs |
| The only places on Earth where most reptiles cannot live are very | cold areas |
| One way an ectotherm can warm its body is to | bask in the sun |
| In what way is the body plan of a snake different from that of a typical reptile? | Snakes have no legs. |
| Most reptiles exchange gases through their | lungs |
